I am (re)reading "Finding Flow" - Mihaly Csikszentmihalyi (Author) http://www.elitetrader.com/vb/attachment.php?s=&postid=2912159 In it he describes two types of personality, the autotelic and the exotelic personality. Autotelic is composed of two Greek roots, auto (self) and telos (goal). An autotelic activity is one that we do for its own sake. So I may play a game of chess simply for the joy it brings me, while if I played chess to make money or achieve fame, the same game would be exotelic. Most people on ET are exotelic, as evidenced for example at their incomprehension of a person such as this: http://www.elitetrader.com/vb/showt...3&perpage=6&highlight=cohomology&pagenumber=1 It is this transition of being born autotelic to exotelic in adulthood that I believe is the metaphor that the bible describes in what is imo the most important story in the bible, the expulsion of man from Eden when he eats from the tree of knowledge. It is this extremist exotelic that makes terrorists out of so many in the world, imo.